From: Jens Axboe <axboe@suse.de>
If the drive doesn't support GPCMD_READ_DISC_INFO at all, permit writeable
opens.
---
25-akpm/drivers/cdrom/cdrom.c | 13 +++++++++++--
1 files changed, 11 insertions(+), 2 deletions(-)
diff -puN drivers/cdrom/cdrom.c~make-borken-cdroms-writeable drivers/cdrom/cdrom.c
--- 25/drivers/cdrom/cdrom.c~make-borken-cdroms-writeable 2004-03-25 00:39:55.274367352 -0800
+++ 25-akpm/drivers/cdrom/cdrom.c 2004-03-25 00:39:55.277366896 -0800
@@ -725,7 +725,7 @@ static int cdrom_media_erasable(struct c
disc_information di;
if (cdrom_get_disc_info(cdi, &di))
- return 0;
+ return -1;
return di.erasable;
}
@@ -735,7 +735,16 @@ static int cdrom_media_erasable(struct c
*/
static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi)
{
- return !cdrom_media_erasable(cdi);
+ int ret = cdrom_media_erasable(cdi);
+
+ /*
+ * allow writable open if media info read worked and media is
+ * erasable, _or_ if it fails since not all drives support it
+ */
+ if (!ret)
+ return 1;
+
+ return 0;
}
static int cdrom_mrw_open_write(struct cdrom_device_info *cdi)
_